Malicious PDF — malware analysis report

Static analysis result for SHA-256 188aac49cfc1213e…

MALICIOUS

PDF

84.2 KB Created: 2021-03-15 07:23:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e2fa8f3957392c0df1a1086aacac01a2 SHA-1: f6a0e0f8227f288b2fd46ff8eb1e2a21c908e5e4 SHA-256: 188aac49cfc1213e52e7ba5afa0ff93e06373d6eae97f93ce4cf55cb70b892e4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though partially corrupted, references a 'Jack Reacher' review, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/strik?utm_term=jack+reacher+never+go+back+review PDF link annotation
    • http://ctyr.ru/bavoluxonuwuzikxzdy.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/TjjrQji/flight_pilot_simulator_3d_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/vebiziwob/ifMN9jd/ihss_online_timesheet_login_sacramento.pdfIn PDF document text
    • http://bachanalytics.com/how_to_day_trade_for_livinge3sx2.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/Nfhdida/nylon_rope_grass_cutting_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/6Lhhvhc/newosov.pdfIn PDF document text
    • http://baykamif.space/avid_pro_tools_12_free_windowsokbcb.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/glXaGOd/renew_teacher_assistant_certification_ny.pdfIn PDF document text
    • http://topcreditcheck.info/zamogorunedujewifd7l33.pdfIn PDF document text
    • http://greyfruit.space/brahmarshi_vishwamitra_movie_songs_freexkc2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c88eee-0a15-4f31-b7ee-ce8a1bf93845/blue_miniature_dachshund_puppies_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/smirnoff_green_apple_vodka_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/beyond_borders_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/bass_guitar_minor_scales.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/munofed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3323ffa-ccee-4364-8957-cf6354a581b5/zorba_the_greek_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/23043170885.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/the_foggy_dew_sheet_music_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60e6ffee-7312-4035-84eb-5ea03e03824b/play_goat_simulator_demo_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/dieta_doktor_budwig.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/cultural_nationalism_apush.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/lapozavevikikunu.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/macromedia_freehand_9_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37955dd3-e151-4d9c-9a91-dc61c5975d08/krugman_wells_macroeconomics_solutions_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B44 5196 bytes
SHA-256: 53b7a8548b86d16e2e123174ee443d0314951ef574a0808696099aeef6d44239
font_01_sfnt_off00011d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0B 11360 bytes
SHA-256: ff688584edef02f7959784378406c5b4e4738c4d3503f11202ad9f07cf2a3d56

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